The New Patriot Mag Release is the "bullet button reloaded" which helps aid in a featherless AR-10 rifle build.

The BulletButton.com Patriot Magazine Release Assembly allows your rifle to be reloaded only when disassembled. The assembly allows use of standard or ambidextrous mag release latches. Comes with extended rear takedown pin and small rope for easier and quicker separation of upper and lower.